On Wed, Jan 21, 2009 at 04:40:36PM +0000, David Flynn wrote:
> The only use i see for sequence_header_buffer is for confidence scoring:
> 
>  - stash the first seqhdr you see
>  - have a saturating counter that:
>     - saturates at say 3.
>     - increments for each subsequent seqhdr that matches
>     - decrement for each failed match
>  - if the counter ever underflows, assume there is a missed EOS, etc.,
>    create a new instance and destroy the current one.
> 
> Other factors can be used to influence the confidence, eg step changes
> in picture number range. (not impulses)
> 
> However, it doesn't help much for deciding if a new sequence is pretty
> much identical to the old one, something that i was wanting to use.
> 
> Status: Unknown -- shall we implement the above?

I think there are much more important things to worry about.

We keep the sequence header information in the video_format structure.
IMO, it's more useful decoded than encoded, even for any kind of
automatic change detection.



dave...


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